I did an install today of a reverse camera on my Z120BT and when I finished up the wiring it would not turn on the camera when I put it in reverse. So I went through the settings and switched the polarity. Still nothing. So I found my reverse wire (12v) was not connected well. After connecting the 12V reverse wire I turned on the radio and now it has a screen that says "Caution screen image may appear reversed" and none of the buttons do anything! When I put it in reverse the camera does come on and works good. The buttons do not do anything when the camera screen is on either! 

I have searched the net and found some answers for older Pioneer nav units but nothing for the AVIC models. 

Can anyone help me out? Do I need to reset the unit? Is there anyway to get back to the settings screen? Factory reset? 

I also tried to disconnect the cameras wiring (power and RCA plug) but still the unit is locked up! 

HELP!!!!